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Now if you visit mongodb.com,

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there is a chance you'll automatically see mongodb atlas there on the front page and then you can

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just click on get started free.

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If you don't see it, you can click on solutions and then there, choose mongodb Atlas

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and if you are on that page, you should at least have a get started free button.

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Now if you click on that button, you are required to sign up

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and as you see, there is no credit card required

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so you can absolutely start for free without any danger of getting charged.

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So make sure you do sign up here,

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I already do have an account so I'll just sign in

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and once you are signed in, you should end up on a page like this

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or maybe you have to create a project first,

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so simply fill out the project details, give it a name and then you should end up on this clusters page

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here. Now clusters simply describe a mongodb environment,

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a cluster contains all your shards, all your replica sets,

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it's basically what you deploy, it's your deployed mongodb server.

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So here on the clusters page,

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I can click build a new cluster and this is the page where you can now configure your mongodb

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environment as it will be deployed for you,

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now let me walk you through that page.

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The things you see here might change slightly but in general, you have a global cluster configuration which

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is not available for free,

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you actually have to choose the M30 tier to which I'll come back once we dive into the tiers which is

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a bit more expensive but there, what you can efficiently do is you can choose different parts on the

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world where you want to deploy different clusters or shards you could say that then talk to each

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other, which is not a trivial set up but you can do it with a couple of clicks.

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The idea of course is you can also choose from a couple of templates here that your data is distributed

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across the world so that your users have the shortest way to the data possible, so that if a user in Europe

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requests something from your app, you can reach out and will automatically reach out to the closest

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mongodb server in Europe

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and if the user sits in the US, well then US mongodb distribution is used

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and this happens automatically then.

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So this is something you can enable but not something I will enable here. As a next step, you have to

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choose the underlying cloud provider,

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now you don't have to sign up with these cloud providers but mongodb,

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the company does not host its own data centers, instead the mongodb solution you configure here

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will be deployed in data centers of one of these free providers here.

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Now I'll stick to AWS and there you can then choose the region where you want to deploy, in case you're

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not using that global cluster configuration.

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Now make sure to choose a region where free tier available is added, so that you can get started for

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free

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but of course if you are willing to pay, you can choose from all these regions and from the different

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providers too. The next important thing is the cluster tier,

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this defines the power you have and what you can do. Now for the free tier you have to choose

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the M0 instance and you can follow along with that,

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I will choose a slightly different instance because I want to configure something else which is not

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available for free but which you also don't need to do as part of this course.

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So you can absolutely continue for free,

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I will choose the M10 instance here because that allows me to show you something else.

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So I'll take the paid one and I added a credit card,

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you should of course use the free one.

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Now you can see how these different instances differ or how the tiers differ I should say, you get more

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power basically the more you pay

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and you got solutions for basically any kind of application you could build and this will only be

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one server,

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now I'll come back to how you can add sharding in a second.

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You can also customize the available storage,

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so how much data can be stored overall in gigabytes and

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well you can use that slider to change it,

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you can also check that to automatically expand the storage before you exceed it

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and now under additional settings, you can choose the version you want to use

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and if you're using the free tier, you can't choose that.

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I want to show you something in the next module which requires version four and therefore I chose

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the paid version, you don't have to do this on your own in the next section though you can follow along

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by watching my videos, so you can go with the older version for now and not follow along,

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I will need 4.0 or higher,

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so I chose the paid solution and now I can switch to that version of mongodb. Wired

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Tiger is the storage engine and you see only that is available

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and it's also a pretty good storage engine.

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You can also configure backups and there you got the choice between two types of backup,

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continuous means that all your data is basically backed up all the time,

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whenever you write something and so on, you've got a continuous backup history,

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so it's not once every 24 hours,

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basically you can always back up to almost the latest state you were in.

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The alternative is a snapshot approach where you do have a 24 hour period, so you have the danger of

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losing data for the last 24 hours or for the last 23 hours

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if the last backup is that long ago.

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So I'll go with continuous

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but of course you can choose either of the two, that is also only available when you pay I guess, yeah you

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can't set up a backup otherwise,

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so I will go with paid

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but of course if you deploy a production solution, you will probably also pay so that that should be fine.

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And then you can set up sharding,

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ok for sharding I need an even bigger instance, so I'll quickly switch to that, M30 so I can show it

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to you for now.

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You can set up sharding and then you can choose how many shards do you want

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and that is how you then add even more power besides the tier you chose here.

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Now I don't need sharding here so I'll go back to M10 for now.

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You can also add a couple of other options like encryption at rest which is pretty self-explanatory here,

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you should check the official docs in case you want to enable though so that you get everything right.

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The additional options is something you can pretty much ignore,

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you could say that you want to only allow queries that run against data,

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you should know what you're doing here because again, creating too many indexes is not a good idea.

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You can enforce an index key limit so that your index keys can't get too long and the default is that this

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is turned on

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and last but not least, you assign a cluster name and then with all these things configured, you can click

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create cluster

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and now mongodb will deploy this solution into the web, so onto a couple of servers and this will

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take a couple of minutes but thereafter, you'll have a fully functional mongodb environment

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running in the cloud, automatically secured, automatically configured according to best practices,

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it automatically also will be a replica set here as you see,

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you automatically get a free nodes replica set here,

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so this is already included,

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you could add sharding and all these things and you can also reconfigure it after it's running,

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check the official atlas docs for all the details.

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Now whilst this is being created which can take a couple of minutes as I mentioned,

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you can also dive into the security tab and there, you can now secure access to your mongodb database.

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Now as you see, I already got a couple of users

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and you definitely should add a user here, you can add as many users as you want.

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Give them a username and assign a password and I'll just auto-generate one and copy that, I'll need

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it later,

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you can always regenerate it if you will forget it though,

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so I'll just save it.

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You can then set up the privileges for this user, get generally is the user admin, should he just be

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able to read and write to any database and check out the security module if you want to learn more

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about that,

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you can also configure more and assign detailed roles to the user if you need to

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but I will turn Max into an atlas admin here and click add user.

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Now I got my user added, another important thing is the IP whitelist,

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now here I got a bunch of IPs in there which I required in the past.

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Now one thing you should do here is you should add an IP address and in the end, what you will add

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here will be the IP address of the server that is running your application or during development, your

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current IP address which you can automatically fetch here.

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You can also allow access from anywhere but this is generally discouraged because of course it opens

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up your database to everyone,

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people will still need to log in so you still got the mongodb user as a security mechanism

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but it's still more secure to lock it down to your IP address or the IP address of your application,

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so now I add my local IP address. You can also turn on some enterprise security features like a different

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kind of authentication, that is all beyond the scope of this course though,

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so let's go back to the overview and wait for this to finish and let me just quickly talk about other

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things you can do in Atlas in the next lecture.